Walter cheese



Oct. 1, 1929. w. CREESE 1,729,821

LAST

Filed June 12, 1928 *A i K V E. N T 0 FR Maggy? H RNEY5,

Patented Oct. 1, 1929 UNITED STATES WALTER GREESE, OF LEICESTER, ENGLAND LAST Application filed June 12,

This invention relates to two-part hinged lasts employed in the manufacture of boots and shoes, and has for its object an improvement therein as will be hereinafter described.

A convenient embodiment of the invention is illustrated in the accompanying drawing, wherein Figure 1 is apart sectional elevation of a two part hinged last constituting said embodiment, the two parts of the last being shown in the straightened and locked condition,

Figure 2 is a similar view showing the same last broken, and

Figure 3 is a similar View hereinafter particularly referred to.

This invention is applicable to a two-part hinged last of the kind which, for locking it in a straightened condition, is fitted in one part thereof with a spring pin or bolt adapted to enter a socket in the other part, said pin or bolt being so constructed and arranged that it can, after withdrawal to unlock the last, be fastened or retained in its withdrawn position, thus leaving the operator both hands free for bending the last.

One form of such a last is illustrated in the accompanying drawing such last being provided with a fastening device comprising a pin or bolt 1 having a reduced shank carrying a spring 2 and inserted slidably in a metal sleeve 3, one end of which is inturned to fit the shank and serve as an abutment for the spring. The sleeve 3 has formed in one side thereof a bayonet slot 4 disposed longitudinally, and the bolt has a pin 5 inserted transversely therein so as to project therefrom into said bayonet slot. When the bolt 1 is withdrawn the pin 5 works along the longitudinal part of the slot 4, and when upon completion of the withdrawal movement the bolt is given a slight turning movement the pin is brought into the rightangular end of the slot as represented in Figure 2, which serves to hold the bolt in thewithdrawn position. On turning the bolt in the opposite direction the pin 5 is removed fromthe end of the slot whereupon the spring actuates the bolt and projects the same for locking puroses.

A milled knob 6 or equivalentis formed on 1928. Serial No."284,7631

or attached to the shank of the'bolt 1 Whereby said bolt may be operated, the lower end of which knob abuts against the inturned end of the sleeve 3 to limit the movement of the bolt under the influence of its spring.

Instead of employing a bayonet slot in the sleeve 3 a T-shaped slot may be used, and instead of a slot in one side of the sleeve slots may be furnished in opposite sides thereof, in which case a pin may be passed transversely through the bolt so that its ends project into the corresponding slots. The slot or slots when formed as aforesaid serve to limit the withdrawal movement of the bolt.

In applying the described fastening means to the last the metal sleeve 3 is pressed into a 'hole 7 in the heel part 8 so that the bolt 1 can enter a socket 9 in the forepart 10 with the parts in the straightened condition. The socket may be provided with a metal sleeve 11. If desired, however, the sleeve 3 may be dispensed with and the bolt 1 may be mounted in a recessed or shouldered hole in the heel part, in which case it may be fitted with a transverse pin which works up and down in a slot or slots suitably formed in the heel part, and, when the bolt is withdrawn and turned, engages with the top of the heel part to prevent downward movement of the bolt.

It will be readily understood that the provision of a fastening device of the kind herein described is of considerable advantage, in that it enables the operator to use both hands for bending the last after it is unlocked. There is however the disadvantage that before the last can be again straightened the bolt 1 must be turned by hand to allow it to be influenced by its spring to lock the last. This causes a certain amount of inconvenience to operators and this involves waste of time when a considerable number of lasts has to be dealt with in this manner.

Accordingly the object of the present invention is to provide in a two part last fitted with locking means of the kind aforesaid positively acting means whereby the locking means are automatically released from the inactive position when the last is straightened.

The invention is carried into effect by the provision in one part of the last of releasing means which move past and make contact with the aforesaid locking means in the other part of the last as said last is brought from the broken to the straightened condition, which thereby act to release said locking means in a manner hereinafter described.

The releasing means may include a spring operated pin or the like, located in the fore part of the last, so as to move from one side of the locking bolt to the other as the last is straightened and bent. straightening action it makes contact with and effects the release of said locking bolt to enable it to lock the last.

1 I Referring to the drawings the last is prothus lock the last.

vi'ded in the iore'part with a pin 12 havingla reduced shank or portion carrying a spring 13. The pin 12 is inserted slida-bly in a, metal sleeve 14 forced into a hole in said forepart, the inner or lower end of said sleeve being inturned to fit the reduced shank of the pin and to serve as an-abutment for the spring. The shank of the pin is formed with a head or knob 12 to limit the outward movement of the pin when the two partsof the last are disconnected.

When the last is in the straightened con dition the pin. 12 is located to one side of '30 the'locking bolt 1, as shown in Figure 1, but when the last is bent it is moved to the other side as shown in Figure 2, it being understood that the outer end of said pin,

by reason of its spring, is kept in constant engagement with the opposing faceof the heel part 8 of the last. When the lastis again brought to the straightened condition the outer end of the pin 12temporarily makes contact with the outer end of the bolt 1,

which action releases the pin 5 on said bolt from the rightangular end of the slot 4,

. the lower end of the bolt during the straightening movement it may have a slight lifting action on the bolt 1 to free the pin 5 from engagement with the lower edge-of the slot and thereby allow the torsion in the spring 2 to become effective and turn the bolt to a position indicated in Figure 3, in which it can move under the lnfluence of its spring to reenter the socket in the forepart when said'socket registers with the bolt. The torsion may be imparted to the spring 2 during the turning movement of the bolt 1 by reason During the of the frictional engagement of the ends of the spring with the shoulder of said bolt and the inturned end of the sleeve 3 while it is compressed. Or torsion may be first set up in the spring after which its -free ends vmay be attached to said shoulder and inturned end of the sleeve by inserting them in holes therein. Instead of depending upon the frictional engagement of the pin 5 with the rightangular end of the slot 1 to resist the torsion in the spring 2, said rightangular end may be provided with a slight hollow or recess in its lower edge which is engaged by the pin '5, when the bolt 1 is withdrawn and turned. The slight lifting action imparted to the bolt 1 by the pin 12 during the latters movement thereunder lifts the pin5 out of the said hollow or recess and thereby allows the torsion in the spring 2 to become eiiective as her'einbeiore described. v e In order to effector facilitate the turning movement and consequent release of'the bolt 1 to free the pine fromtherightan gular end of the slot 1, I dispose the pin 12in the iorepart' so that, when acting on the bolt in the h'e'elpar't, itis slightly eccentric with same whereby as the said pin 12 moves past the bolt 1 it lmparts a slight turning movement thereto.

lVhatIclaim'is: j 1 1. In a two-part hingedlast which for locking it in the straightened conditon isv fitted in one part with a'fastening device to engage the other part'and is furnished with means for holding said device'inoperative when the last is to be broken, and means in said other part formaking contact with said device for automatically releasing the same from the inoperative position when the last is straightened. i i

2. In a two-part hinged last which for :locking itin the straightened condition is fitted in one part with a spring controlled locking member for engagementwith the other part and is furnished with means for holding said member inoperative when the last is to be broken, a spring controlled member in said otherpart for automatically e'tfee-ting the release of the locking member to lock the last when the latter 'is straightened.

3. In a two-part hingedlast which'for looking it in the straightened condition is fitted with a' spring controlled bolt in' the heel part for-engagement with the forepart, and is furnished with means for holding said bolt inoperative whenthe last is to 'be broken, a spring controlled pin in the forepart arranged to actuponthe locking bolt when the last is straightened for the purpose of effecting automatic return of said bolt to the locking position. I 1

4. In a two-part hinged last a locking device in one part for engagement with the other part for locking the last in the straightened' condition and adapted upon withdrawal to an inoperative position to be turned and held in such position when the last is to be broken, and a member in the said other part which by contact with the locking device during the straightening action automatically brings about turning movement of said device to release the same for the purpose of locking the last.

5. In a two-part hinged last, a spring controlled locking device in one part for engagement with the other part for locking the last in the straightened condition and adapted upon withdrawal to an inoperative position to be turned and held in such position when the last is to be broken, thereby imparting torsion to its spring, and a member in the said other part which by contact with the locking device during the straightened action enables the locking device to be turned automatically under the torsion of its spring and returned to the locking position.

6. In a two-part hinged last a locking device in one part for engagement with the other part, for locking the last in the straightened condition and adapted upon withdrawal to an inoperative position to be turned and held in such position when the last is to be broken and a member in the said other part which, by contacting eccentrically with the locking device during the straightening action, automatically turns said device to release the same and enable it to return to the locking position.

7. In a two-part hinged last, a spring controlled locking bolt in the heel part for engagement with the forepart for locking the last in the straightened condition, and adapted when the last is to be broken to be withdrawn to an inoperative position and to be turned and held in such position, and a spring controlled pin in the forepart, which during the straightening action makes contact with the locking bolt and thereby automatically brings about turning movement of the locking member to release same and enable it to return to the locking position.

8. In a two-part hinged last, a spring controlled locking bolt in the heel part for engagement with the forepart for locking the last in the straightened condition, and adapted when the last is to be broken, to be withdrawn to an inoperative position and to be turned and held in such position, thereby imturned and held in such position, and a spring controlled pin in the forepart which by contact eccentrically with the locking bolt during the straightening action automatically turns said bolt to release the same and enable it to return tothe locking position.

10. In a two-part hinged last a spring controlled locking bolt in the heel part, for engagement with a socket in the forepart to lock the last in the straightened condition, and adapted when the last is to be broken to be withdrawn to an inoperative position and to be turned and held in such position, and a spring controlled pin in the forepart arranged to pass from one side of the locking bolt to the other upon relative movement of the two parts, and during the straightening movement to make contact with the bolt and automatically bring about turning movement thereof to enable same to return to the locking position.

11. In a two-part hinged last a spring controlled locking bolt in the heel part for engagement with a socket in the forepart to lock the last in the straightened condition, and adapted when the last is to be broken to be withdrawn to an inoperative position and to be turned and held in such position thereby applying torsion to its spring, and a spring controlled pin in the forepart arranged to pass from one side of the bolt to the other upon relative movement of the two parts, and during the straightening movement to make contact with the bolt to enable the same to be automatically turned under the torsion of its spring and returned to the locking position.

12. In a two-part hinged last a spring controlled bolt in the heel part for engagement with a socket in the forepart to lock the last in the straightened condition, and adapted when the last is to be broken to be withdrawn to an inoperative position and to be turned and held insuch position, and a spring controlled pin in the forepart arranged to pass from one side of the bolt to the other upon relative movement of the two parts, and during the straightening movement to contact eccentrically with the bolt and thereby automatically turn the same to enable it to return to the locking position.

13. In a two-part hinged last of the solid or non-gapped type co-operating members in the two parts one of which serves to lock the last in the straightened condition and is withdrawable to an inoperative position and furnished with means whereby it is held in the inoperative position when the last is to be broken, while the other serves, by contact with the locking'member during the movement of the two parts to straighten the last,

to engender automatic return of said locking member to its operative position.

In testimony whereof I have signed my name to this specification.

WALTER CREESE. 

